<template>
  <div>
    <!-- 三级分类 -->
    <Category :scene="scene"></Category>
    <el-card style="margin: 10px 0px">
      <div v-show="scene === 0">
        <el-button
          @click="addSpu"
          type="primary"
          size="default"
          icon="Plus"
          :disabled="categoryStore.c3Id ? false : true"
        >
          添加SPU
        </el-button>
        <!-- 展示已有SPU数据 -->
        <el-table style="margin: 10px 0px" border :data="records">
          <el-table-column
            label="序号"
            type="index"
            align="center"
            width="80px"
          ></el-table-column>
          <el-table-column label="SPU名称" prop="spuName"></el-table-column>
          <el-table-column
            label="SPU描述"
            prop="description"
            show-overflow-tooltip
          ></el-table-column>
          <el-table-column label="SPU操作">
            <template #="{ row, $index }">
              <el-button
                type="primary"
                size="small"
                icon="Plus"
                title="添加SKU"
                @click="addSku(row)"
              ></el-button>
              <el-button
                type="primary"
                size="small"
                icon="Edit"
                title="修改SPU"
                @click="updateSpu(row)"
              ></el-button>
              <el-button
                type="primary"
                size="small"
                icon="View"
                title="查看SPU列表"
                @click="findSku(row)"
              ></el-button>
              <el-popconfirm
                :title="`你确定删除${row.spuName}?`"
                width="200px"
                @confirm="deleteSpu(row)"
              >
                <template #reference>
                  <el-button
                    type="primary"
                    size="small"
                    icon="Delete"
                    title="删除SPU"
                  ></el-button>
                </template>
              </el-popconfirm>
            </template>
          </el-table-column>
        </el-table>
        <!-- 分页器 -->
        <el-pagination
          v-model:current-page="pageNo"
          v-model:page-size="pageSize"
          :page-sizes="[3, 5, 7, 9]"
          :background="true"
          layout="prev, pager, next, jumper,->,sizes,total"
          :total="total"
          @current-change="getHasSpu"
          @size-change="changeSize"
        />
      </div>
      <!-- 添加SPU|修改SPU子组件 -->
      <SpuForm ref="spu" v-show="scene === 1" @changeScene="changeScene" />
      <!-- 添加SKU子组件 -->
      <SkuForm ref="sku" v-show="scene === 2" @changeScene="changeScene" />
      <!-- dialog对话框：展示已有的SKU数据 -->
      <el-dialog v-model="show" title="SKU列表">
        <el-table border :data="skuArr">
          <el-table-column label="SKU名字" prop="skuName"></el-table-column>
          <el-table-column label="SKU价格" prop="price"></el-table-column>
          <el-table-column label="SKU重量" prop="weight"></el-table-column>
          <el-table-column label="SKU图片">
            <template #="{ row, $index }">
              <img
                :src="row.skuDefaultImg"
                style="width: 100px; height: 100px"
                alt=""
              />
            </template>
          </el-table-column>
        </el-table>
      </el-dialog>
    </el-card>
  </div>
</template>

<script setup lang="ts">
import { ref, watch, onBeforeUnmount } from "vue";
import { reqHasSpu, reqSkuList, reqRemoveSpu } from "@/api/product/spu";
import type {
  HasSpuResponseData,
  Records,
  SpuData,
  SkuInfoData,
  SkuData,
} from "@/api/product/spu/type";
// 引入子组件
import SpuForm from "./spuForm.vue";
import SkuForm from "./skuForm.vue";
// 引入分类仓库
import useCategoryStore from "@/store/modules/category";
import { ElMessage } from "element-plus";
let categoryStore = useCategoryStore();
// 场景的数据
let scene = ref<number>(0); //0:显示已有SPU 1:添加或者修改已有SPU 2:添加SKU的结构
// 分页器默认页码
let pageNo = ref<number>(1);
// 每一页展示几条数据
let pageSize = ref<number>(3);
// 存储已有的SPU的数据
let records = ref<Records>([]);
// 存储已有SPU总个数
let total = ref<number>();

// 获取子组件实例SpuForm
let spu = ref<any>();
// 获取子组件实例SkuForm
let sku = ref<any>();
// 存储全部的SKU数据
let skuArr = ref<SkuData[]>([]);
let show = ref<boolean>(false);

// 监听三级分类ID变化
watch(
  () => categoryStore.c3Id,
  () => {
    // 务必保证有三级分类ID
    if (!categoryStore.c3Id) return;
    getHasSpu();
  },
);
// 此方法执行：可以获取某一个三级分类下全部的已有的SPU
const getHasSpu = async (pager = 1) => {
  // 修改当前页码
  pageNo.value = pager;
  let result: HasSpuResponseData = await reqHasSpu(
    pageNo.value,
    pageSize.value,
    categoryStore.c3Id,
  );
  if (result.code == 200) {
    records.value = result.data.records;
    total.value = result.data.total;
  }
};
// 分页器下拉菜单发生变化的时候触发
const changeSize = () => {
  getHasSpu();
};
// 添加新的SPU按钮的回调
const addSpu = () => {
  // 切换为场景1：添加与修改已有SPU结构->SpuForm
  scene.value = 1;
  // 点击添加SPU按钮，调用子组件的方法初始化数据
  spu.value.initAddSpu(categoryStore.c3Id);
};
// 修改已有的SPU按钮的回调
const updateSpu = (row: SpuData) => {
  // 切换为场景1：添加与修改已有SPU结构->SpuForm
  scene.value = 1;
  // 调用子组件实例方法获取完整已有的SPU的数据
  spu.value.initHasSpuData(row);
};

// 子组件SpuForm绑定自定义事件：目前是让子组件通知父组件切换场景为0
const changeScene = (obj: any) => {
  // 子组件SpuForm点击取消变为场景0，展示已有的SPU
  scene.value = obj.flag;
  if (obj.params === "update") {
    // 更新留在当前页
    getHasSpu(pageNo.value);
  } else {
    // 添加留在第一页
    getHasSpu();
  }
};

// 添加SKU按钮的回调
const addSku = (row: SpuData) => {
  // 点击添加SKU按钮切换场景为2
  scene.value = 2;
  // 调用子组件的方法初始化添加SKU的数据
  sku.value.initSkuData(categoryStore.c1Id, categoryStore.c2Id, row);
};

// 查看SKU列表的数据
const findSku = async (row: SpuData) => {
  let result: SkuInfoData = await reqSkuList(row.id as number);
  if (result.code == 200) {
    skuArr.value = result.data;
    // 对话框显示
    show.value = true;
  }
};

// 删除已有的SPU按钮的回调
const deleteSpu = async (row: SpuData) => {
  let result: any = await reqRemoveSpu(row.id as number);
  if (result.code == 200) {
    ElMessage({
      type: "success",
      message: "删除成功",
    });
    // 获取剩余SPU数据
    getHasSpu(records.value.length > 1 ? pageNo.value : pageNo.value - 1);
  } else {
    ElMessage({
      type: "error",
      message: "删除失败",
    });
  }
};

// 路由组件销毁前，清空仓库关于分类的数据
onBeforeUnmount(() => {
  categoryStore.$reset();
});
</script>

<style></style>
